Improvement in machines for making nuts



UNITED STATES i PATENT OFFICE.

PHILIPPE KOCH, OF NEW HAVEN, CONNECTICUT.

IMPROVEMENT lN MACHINES FOR MAKING NUTS.

Specification forming part of Letters Patent No. 38,397, (lated May 5, 1863; antedated April 18, 1863.

T0 LZZ whom it may concern:

Be it known thatI, PHiLrPPE KOCH, of New Haven, in the county ot' New Haven and State of Connecticut, have invented a new and Improved Machine for Making Nuts for Bolts 5 and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, making a part of this specitication, in which- Figure lis a front view of my invention; Fig. 2, a vertical section of the same, taken in the line .fr w, Fig. 1; Fig. 3, a plan or top view of the same 5 Fig. 4, a section of a portion of the same, taken in the line y y, Fig.1; Fig. 5, a section of a portion of the same, taken in the line z z, Fig. 3; Fig. 6, a section of a portion of the same, taken in the line x a', Fig. 3; Fig. 7, a section of aportion ofthe same, taken in the line y y', Fig. 3; Fig. 8, a section of a portion of the same, taken in the line z z', Fig. 3; Fig. 9, a section of a portion of the same, taken in the line x or, Fig. 3.

Similar letters of reference indicate corresponding parts in the several figures.

This invention consists in a novel and improved manner of cutting off the blanks from the bar and forging or hammering the sides thereof, and also in an improved manner of punching the blanks and finishing the same, as hereinafter fully shown and .'described, whereby it is believed that nuts may be manufactured in a more rapid and perfect manner than hitherto.

To enable those skilled in the art to fully understand and construct my invention, I will proceed to describe it.

A represents a horizontal bed, which is supported at a suitable' height by any proper framing or supports a and B is a recess made horizontally in the bed, and into which recess the bar from which the blanks are cut is fed. In the bedA, at the inner end of the recess B, there is tted vertically a steel bar, C, through which a hole, b, is made horizontally, as shown clearly in Fig. 6, the hole b being sufficiently large to admit of the bar from which the blanks are cut passing through it.

D represents a lever, which has its fulcrumpin c passing through ears or lugs d on the bed A. The front end of this lever is tted in a recess, in the bed, and works closely to the bar C, as shown clearly in Fig. 6. This lever D is raised by a cam, E, on the drivingshaft F of the machineplaced underneath the bed A, and the f'rdnt end of said lever has a horizontal recess made in it to receive a slide, G, which is moved or actuated in a line parallel with the axis of the lever by alever, H, tted in the lever D and operated by a projection or arm, f, on the shaft F adjoining the cam E, and shown by the dotted lines in Fig.l

1. The slide G also has a spring, g, connected with it, which has a tendency to keep the slide G back in the recess of lever D, as shown in Fig. 6. The front end of the slide G is provided with a lip, h, the use of which will be presently shown.

I is a slide which is fitted in the bed A at right angles to the slide G in lever D, and is actuated by an arm or projection, fi, at the lower end of a vertical shait, J, which shaft is turned by a cam, K, on a shaft, L, above the bed A, said cam acting aga-inst a lever, j, on the upper end of shaft J, (see Figs. 1 and 3.) The slide I has a spring,jX, connected to it, which has a tendency to keep it back from the hole b vin the steel bar C.

M is a sliding bar which is fitted in the bed A directly over the slide I. This bar M is actuated by a cam, N, on the shaft F, said cam bein g formed by making a serpentine groove, lc, in the periphery of a wheel, as shown clearly in Figs. l and 3. The bar M is connected to the cam by a pendent pin, l, which tits in the groove k.

The parts above described form the cutting off and rst pressing mechanism. The bar from which the blanks are cut is properly heated at one end and thrust into the recess B until it comes in contact with the front end of the slide G, which serves as a stop. The lever D -is then raised by the action of the cam E on. shaft F, and the blank is cut from the bar while firmly held by the steel bar C. The rising of the leverD forces the blank indicated by m (see Fig. 6) above the level of the hole 1), and in line with the slide I, the lip h on slide G preventing the blank rising above a proper position, and when -the blank m reaches that point the slides G I are actuated by the mechanism previously described, and Ithe sides of the blank m are compressed, the slide G forcing one side of the blank against the upper part of G, and the slide I forcing the adjoin- -ing ride against the side t of the bed A.

(See Fig. 4.) When the slides G I have acted upon the blank, they are thrown back to their original position by their springs gjx. After this operation is performed the cam E still further raises the lever I) until it comes in line with the sliding bar M, which is then moved by its cam N and shoves the blank between the guides n a underneath a die, O, which is fitted vertically in the front end of a lever, P. This lever P has its fulcrum-pin passing through lugs or projections 0 o on the bed A, and within the front part of said lever there is placed a punch. Q, which, when forced down, passes through a hole at the center of the die O. (See- Fig. 7.)

The die O has its under pr face side made of concave form,and the punch Q, is forced down by the cani S and upward by an arm, p, on ashaft, R,which passes horizontally through the lever P, and is turned by an arin, q, on a cam, S, on shaft L, coming-in contact with an arm, r, on the shaft R. (See Fig. l.) The lever Pis actuated so as to force down the die() by a projection or prominence on the cam S at each side of the cam, and said lever has a spring, t, bearing against its under side, which spring has a tendency to force the lever upward.

When theblank m arrives underneath the die 0, the latter descends upon it, and presses upon its upper surface, and the punch Q is then forced down through the die and punches a hole through the center of the blank, the waste metal or puuchings falling through a hole, n, in the bed A.

When the blank m is thus punched, the bar M is again moved, and the punched blank is forced into a box, T, in the bed A, and directly over a vertical hole, t, in said bed, in which a pin, zr, is placed. (See Figs. 5, 8, and 9.) This pin is secured to a spring, U, underneath the bed A, which spring has a tendency to keep the pin down within the hole t. The spring U is raised by a cam, V, on the shaft F,and when said spring is raised or forced upward the pin w enters the holein the blank m and raises it upward in the box T, above the passage c', through which it entered the box. (See Fig. 5.)

The pin w has a spiral spring, W, connected to it, or to spring U, which spring has atendency to keep the blank m a short distance from two adjoining or contiguous sides, b' b', of the box T. (See Figs. 5 and 8.)

X X' are two slides, which are placed on the bed A at right angles to each other, and which are in line with the blank m when the latter is elevated. The slides X X' are opposite the sides b' b' of the box T, and they are actuated one, X', by projections on arms c' on the cam S, which strikes an upright, c", on slide Y', and the other, X, by arms or projections d' on a cam, Y, on shaft L. When the slides X X' are actuated by the projections on the cams speciiied, they are forced outward from the blank fm, and springs e' c", which are connected with said sl ides,force them against two adjoining sides of the blank, and the two other sides are forced against the two sides b b' of the box T. In consequence of having the blank m out some distance from the sides b' b' of the box T, its two sides opposite the two sides b' b' of the box T are forced against it with considerable power, sufciently so as to causethe sides being made perfectly smooth. This result could not be attained if the blank were in contact with the sides b' b' ofthe box T; hence the valve of the spiral spring W.

After this sin oot hingoperation is performed, the pin w is still further raised by the action of the cam V against the spring U, and is forced up through the blank m, so as to finish and smooth the hole made in it. The pin w is then drawn out from the blank in conse quence of a pin,f', on shaft F, acting upon a curved bar, Z, attached to the spring U. The blank m, when thus liberated from the pin w, is forced by a slide, A', down an inclined plane, g', (see Fig. 9,) upon a tlat bed, B', and underneath a die, C', which is at the lower end of a vertical rod, D'. The slide A' is actuated by a projection, It', on the cam S, which comes in contact with a lever, E", con nected with the slide, the latter being thrown back to its original position when the lever E is released from the projection h' by a spring i'.

When the blank m has passed underneath the die C', the latter was just previously raised in consequence of an arm,j', on the shaft L striking a projection, k', on the rod D', and the die and rod, after the projection passes the arm, fall by their own gravity, the die acting upon the blank with a force due to the weight of the dieand rod, and the blank is relieved of the weight of the die after the latter has performed its work by an elastic plate, m', which throws the die and rod up- Ward, the plate bearing against a shoulder, t', on the rod.

The die C' has a concave surface, and therefore gives a convex surface to the upper side of the blank, while the dat bed B' gives a smooth under surface to the nut, the bed B' is shoved back by a cam F' on the shaft F, and the blank escapes or drops from the machine, and when its hole is tapped the work is finished.

By this invention the blanks are produced in a rapid manner and in a perfectly finished or smooth state. The cutting oi' of the blanks from the bottom of the bar upward is an important feature, as the burr which is formed at the bottom of the blanks by a downward cut is avoided, and the blanks are in consequence formed much truer and smoother than they otherwise would be.

I would remark that the slides X X' operate consecutively, one after the other, and that they are operated so as to give the blank two blows each. I would also remark that motion is communicated from the shaft F to shaft L by means of gearing G'. (Shown in Figs. l and 3.)

I am aware that nut-making machines have been provided with slides operated by cams and springs arranged in varied Ways, and I dov not claim, broadly, these devices irrespective of the arrangement and mode of operation herein shown and described.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The stationary cutter formed of the steel bar O, with a hole, b, made in it, in connection with the lever D, or its equivalent, arranged as shown, to cut the blank from the bar from its under side upward, substantially as set forth.

2. The combination of the die O and punch used in combination with the lever D and stationary cutter bar C, as and for the purpose set forth.

6. The slides X X', arranged as shown, when used in combination with the pin w and box T, to operate as and for the purpose specified.

PHILIPPE KOCH.

Witnesses:

WILLIAM H. GAY, FREDERICK W. WILcoX. 

